20722408

素因数分解:

$2^3\times 7^1\times {\mathrm{509}}^1\times {\mathrm{727}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 44553600

約数和(自身を除く): 23831192

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 509, 727, 1018, 1454, 2036, 2908, 3563, 4072, 5089, 5816, 7126, 10178, 14252, 20356, 28504, 40712, 370043, 740086, 1480172, 2590301, 2960344, 5180602, 10361204, 20722408]

約数ペア:

[(1, 20722408), (2, 10361204), (4, 5180602), (7, 2960344), (8, 2590301), (14, 1480172), (28, 740086), (56, 370043), (509, 40712), (727, 28504), (1018, 20356), (1454, 14252), (2036, 10178), (2908, 7126), (3563, 5816), (4072, 5089)]